Fitting LPG

[The VHK]

Hello,

Just got a new car and want to fit LPG to it. Now i understand how it works ect ect and fitting ect ect so i wont have any problems installing it. The only problem i can see is that he may knock it back because of the old line being used. Its not that copper old stuff but the new flex black line.

Just wondering if anyone has done this before and how much does it cost to get it to be checked over by someone to get a plate fitted?

The car i am getting the system off is my old VK so i will be using the same parts that are working to fit into my car except i have to change the mixer as its a 253 my new car. The tank ect in the vk is in date and has passed a LPG check before so i cant see i will have any problems with the tank ect.

The only thing i will say to the bloke is that i bought the car with this system fitted and wasnt sure it worked or not hehe.

What do you think?

Thanks

[craigvk]

Well, from what you are saying I guess is, you have a complete gas system except the required mixer for your quadrajet carb?

You have got a lot of work to do.

Just wondering if anyone has done this before and how much does it cost to get it to be checked over by someone to get a plate fitted?

What do you mean by this?

Its not that copper old stuff but the new flex black line.

What is flex black line? It doesn't sound exactly great. As far as I'm aware, LPG fitting rules must use copper pipe, and also an outlet solenoid from the tank as well as a solenoid inside the engine bay. On top of that the control module which switches when the ignition is on.

Are you sure you know what you are doing. Gas is dangerous stuff pal!

[The VHK]

Thanks for the reply.

The black flex line is the new gas line used instead of that old copper stuff. I. I remmber when i saw a lpg fitter near me he said to me the lpg copper line cant be used and if i bought a car in to be check and had this line fitted from the tank to converter he would knock it back. Which is true because my friend owns a new BA falcon and that has the new black flexy line. Its not the line from the converter to the mixer it self

What i mean about getting a plate fitted means getting it checked by a gas installer so that it applies with the rules and is safe to use. All i am going to do is fitted it make sure everything is right and run the car at idle then switch it back over to fuel and drive to gas place to be checked over for safety.

Has anyone out there have mixer to suit my carb as the one i got isnt the right one to fit. Its for a single barrel carb and the one on the vk is for a varijet. The one i would like the most is the round Sprint mixer. If anyone has one cheap and want to sell it let me know.

[craigvk]

Thanks for the reply.

The black flex line is the new gas line used instead of that old copper stuff. I. I remmber when i saw a lpg fitter near me he said to me the lpg copper line cant be used and if i bought a car in to be check and had this line fitted from the tank to converter he would knock it back. Which is true because my friend owns a new BA falcon and that has the new black flexy line. Its not the line from the converter to the mixer it self

Sorry mate, but this is absolute garbage! Go somewhere else. When I got my roadworthy done at the first joint (first didn't pass and went to another and it passed after fixing up things), the guy was a bit of a turkey and mechs who do roadworthies in VIC need to do a short gas course to be allowed legally to do roadworthies on gas cars and he didn't mention anything about copper piping or anything. Even though this guy was a bit of a picky swine.

Has anyone out there have mixer to suit my carb as the one i got isnt the right one to fit. Its for a single barrel carb and the one on the vk is for a varijet. The one i would like the most is the round Sprint mixer. If anyone has one cheap and want to sell it let me know.

The 253/308 carb mixers have the snorkel, whereis the six cylinders have the mixer assembly like in one peice as if it was a normal air filter.

Try ebay, or expect to pay around $300 for a new one through a gas joint.

[The VHK]

Hmm ok well maybe he was giving me some crap about it.

I found a snorkel one from a impco 300 to suit my carb from a mate so now i have a complete system . My old VH 202 had the sprint gas mixer running a holley 350 which i liked better than the snorkel because i have heard alot of problems with them running duel fuel.

I was told that you need a solenoid to keep the diaphragm fully open when running on fuel other wise it will starve from no air intact to the carb and cause stalling ect and others have said that this small piping connection underneath the mixer where some adjusment screws is for priming it before starting car.

Which is the correct. I cant see why on duel fuel it will have a problem. Eather your running on one or the other and the diaphragm would still open and close from the vaccume of the carb on eather.

Is your car duel fuel and do you have some pics of the motor bay where the converter ect is fitted so i got a good idea of a good neat mounting place?

[craigvk]

On mine it has a cable into the car and connected to the Impco mixer. The idea of the cable is to close it when running petrol and leave it open when it's on gas. I never bother but I'm sure it would get better performance on petrol if I used it. My mixer is actually a bit buggered at the moment and I know someone who will give me one that came out of a Ford 351 or 302. My diaphragm is a bit stuffed which is causing when on gas to run a bit rough. If your diaphragm is ok then you shouldn't have any problems.
About tuning it, there is under the mixer a cap and screw which when the car is running (on gas) you adjust the screw until you hear the motor running at the highest idle. Basically the best idle sound. There is also another adjustment which is done inside the mixer and needs to be done by a gas joint because the need to connect equipment up to tune it.

As a legal requirement, you do need 2 gas solenoids. One at the tank in the boot and one in the engine bay before the converter.

See attached pic of my converter. This place is only the really decent place to mount it because you have close enough access for the gas hose to the mixer and the two water pump hoses to the converter.